C801B-560 Manhole Cover

C801B-560 Manhole Cover

Blinding Hole Design: The blinding holes can be produced according to use`s demand ,to install with Vapor Vent Valve , Optic Sensor , Pressure gauge ,Dip Tube or External Vacuum Valve according to user`s demand.

Manhole Cover C801B-560/580

  • Whole diameter:20″
  • Blinding Hole Design:

The blinding holes can be produced according to use`s demand ,to install with Vapor Vent Valve , Optic Sensor , Pressure gauge ,Dip Tube or External Vacuum Valve according to user`s demand.

  • Benefit and Features :Big plate is used the plate to punch forming. The material of big plate and dimension can be produced according to user`s demand.

Can be installed double P/V vent valve according to requirement to increase the flow rate of air.

Technical Data:

Emergency open presure: 21Kpa~32Kpa

Max Emergency Flow Rate: 7000m³/h(When 34Kpa)

Material: Aluminum Alloy

Installment Mode: Flanged Type

Temperature Range: -20℃~+70℃

Size Data:

Model: C801A-460

D0: Ø560

D1 Ø530

D2 Ø482

H 88

B 12

Z-d 24-Ø11